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首页> 外文期刊>Journal of Materials Science >Interfacial liquid phase-driven removal of copper ions for bioavailable hyperbranched polytriazoles
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Interfacial liquid phase-driven removal of copper ions for bioavailable hyperbranched polytriazoles

机译:用于生物可利用的超支化多唑的铜离子的界面液相驱动除去

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摘要

The existence of toxic Cu ions in the products synthesized by Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) click chemistry hinders biomedical applications of these products. Cu ions are difficult to remove because stable Cu(II)-triazole coordination complexes are formed in the CuAAC products. To address this problem, we demonstrate a novel interfacial liquid phase-driven method for the removal of Cu ions. We synthesized small molecules, linear polymers, and hyperbranched polymers by using CuAAC. To remove Cu ions in these products, Cu ions were precipitated using Na2S in a solvent mixture that contains water, dimethylformamide, and dichloromethane (DCM). The products and the CuS precipitates were automatically dispersed in the DCM phase and aqueous phase, respectively, resulting in separation of the products and CuS. Compared to the conventional Cu removal methods, our new method is highly efficient, fast, and generally applicable to small molecules and polymers. More than 98% Cu in the CuAAC products can be removed by using our method. Moreover, we tested the biocompatibility of hyperbranched polymers synthesized using CuAAC and purified using our method. These polymers are compatible to cells, indicating our Cu removal method shows promise in purification of biomaterials synthesized using CuAAC.
机译:Cu(I)合成的产品中有毒Cu离子的存在 - 催化Azide-alkyne环加成(Cuaac)点击化学阻碍这些产品的生物医学应用。 Cu离子难以去除,因为在Cuaac产物中形成稳定的Cu(II) - 三唑配位复合物。为了解决这个问题,我们证明了一种用于去除Cu离子的新型界面液相驱动方法。我们通过使用Cuaac合成小分子,线性聚合物和超支化聚合物。为了除去这些产物中的Cu离子,在含有水,二甲基甲酰胺和二氯甲烷(DCM)的溶剂混合物中,使用Na 2 S沉淀Cu离子。产品和CUS沉淀物分别在DCM相和水相中自动分散,导致产品和CUS分离。与传统的Cu去除方法相比,我们的新方法是高效,快速,通常适用于小分子和聚合物。可以使用我们的方法除去CUAAC产品中超过98%的Cu。此外,我们测试了使用Cuaac合成的超支化聚合物的生物相容性,并使用我们的方法纯化。这些聚合物与细胞相容,表明我们的Cu去除方法显示纯化使用Cuaac合成的生物材料的承诺。

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  • 来源
    《Journal of Materials Science》 |2018年第14期|共12页
  • 作者单位

    Northwestern Polytech Univ Sch Sci Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Sch Sci Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Sch Sci Xian 710072 Shaanxi Peoples R China;

    Max Planck Inst Polymer Res Ackermannweg 10 D-55128 Mainz Germany;

    Northwestern Polytech Univ Sch Sci Xian 710072 Shaanxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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